UV inhibitor for glass

Anyone have a link to resin manufacturer or info on UV inhibitor for glassing. I saw a guy at a trade show with 2 boards one with and one without big difference when exposed to hot sun for long periods of time.

Thanks,

edg

Howzit edhead, I've been told that Fiberglass Hi adds UV inhibitor to it's glossing resin. Aloha,Kokua